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CVE-2026-15217— Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

Quick assessment

Affected
GitLab GitLab
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GitLab是美国GitLab公司开源的一款源代码管理平台。 GitLab 18.2至19.0.6之前版本、19.1至19.1.4之前版本和19.2至19.2.2之前版本存在跨站脚本漏洞，该漏洞源于analytics dashboard组件对用户控制的值中和不当，可能导致跨站脚本攻击。

CVSS 8.7 · High EPSS 0.53% · P43

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 3

VendorProduct Version RangeStatus
GitLab GitLab 18.2< 19.0.6 affected
19.1< 19.1.4 affected
19.2< 19.2.2 affected
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I. Basic Information for CVE-2026-15217

Vulnerability Information
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Vulnerability Title
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
Source: CVE Program / CVE List V5
Vulnerability Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 before 19.0.6, 19.1 before 19.1.4, and 19.2 before 19.2.2 that under certain conditions could have allowed cross-site scripting due to improper neutralization of user-controlled values rendered in table cell content by an analytics dashboard component.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
GitLab 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitLab是美国GitLab公司开源的一款源代码管理平台。 GitLab 18.2至19.0.6之前版本、19.1至19.1.4之前版本和19.2至19.2.2之前版本存在跨站脚本漏洞，该漏洞源于analytics dashboard组件对用户控制的值中和不当，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
GitLab GitLab 18.2 ~ 19.0.6 cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-15217

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III. Intelligence Information for CVE-2026-15217

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Patches & Fixes for CVE-2026-15217 (1)

Other References for CVE-2026-15217 (1)

Same Patch Batch · GitLab · 2026-08-12 · 13 CVEs total

CVE-2026-15216 8.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-15423 8.5 HIGH Incorrect Authorization in GitLab
CVE-2026-19228 8.5 HIGH Authorization Bypass Through User-Controlled Key in GitLab
CVE-2026-16627 7.7 HIGH Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Gi
CVE-2026-16494 7.1 HIGH Missing Authorization in GitLab
CVE-2026-7427 5.3 MEDIUM Allocation of Resources Without Limits or Throttling in GitLab
CVE-2026-18244 4.3 MEDIUM Missing Authorization in GitLab
CVE-2026-8667 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-18433 4.3 MEDIUM Incorrect Authorization in GitLab
CVE-2026-6821 4.3 MEDIUM Missing Authorization in GitLab
CVE-2026-4879 4.3 MEDIUM Missing Authorization in GitLab
CVE-2025-9486 3.3 LOW Incorrect Privilege Assignment in GitLab

IV. Related Vulnerabilities

Same product: GitLab
Same vendor: GitLab
Same weakness: CWE-79

V. Comments for CVE-2026-15217

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